Our favorite fast paced adventure is The Smoky Mountain Alpine Coaster. It is the longest downhill ride in the United States, with over 1 mile of track, so if you are looking for an unforgettable experience in your vacation here in the Great Smoky mountains, this is a must do! The vehicles are designed to carry two visitors in comfort but can be handled easily by one alone. The riders are in control of the velocity (up to 27 mph) and this gives them a unique hands-on experience! Rain, snow or sunshine no problem – the excellent braking effect is unchanged so you can ride year-round!